Terminal-to-terminal communication connection control method using an IP transfer network

摘要

A terminal-to-terminal communication control method, wherein an IP transfer network is connected to two or more terminals, said IP transfer network communicate with said terminals by using an IP packet and said IP transfer network includes a server having a function to specify an IP address for communicating with a destination terminal based on a telephone number of said destination terminal, and carries out a terminal-to-terminal communication via said IP transfer network by using internet protocol, wherein said server specifies said IP address, and said IP transfer network includes a connection phase and a communication phase.